package dome1;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class Test {
    public static void main(String[] args) {
        reflectPrivateMethod();
    }

    public static void reflectPrivateMethod() {
        try {
            Class<?> c1 = Class.forName("dome1.Student");
            Method me = c1.getDeclaredMethod("function", String.class);
            me.setAccessible(true);
            Student student = (Student)c1.newInstance();
            me.invoke(student,"我是参数！");
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        } catch (NoSuchMethodException e) {
            throw new RuntimeException(e);
        } catch (InstantiationException e) {
            throw new RuntimeException(e);
        } catch (IllegalAccessException e) {
            throw new RuntimeException(e);
        } catch (InvocationTargetException e) {
            throw new RuntimeException(e);
        }
    }

    public static void main4(String[] args) {
        reflectPrivateField();
    }

    public static void reflectPrivateField() {
        try {
            Class<?> c1 = Class.forName("dome1.Student");
            Field field = c1.getDeclaredField("name");
            field.setAccessible(true);
            Student student = (Student)c1.newInstance();
            field.set(student,"诸葛亮");
            System.out.println(student);
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        } catch (NoSuchFieldException e) {
            throw new RuntimeException(e);
        } catch (InstantiationException e) {
            throw new RuntimeException(e);
        } catch (IllegalAccessException e) {
            throw new RuntimeException(e);
        }
    }
        public static void main3(String[] args) {
            reflectPrivateConstructor();
        }
        public static void reflectPrivateConstructor() {
            try {
                Class<?> c1 = Class.forName("dome1.Student");
                Constructor<?> declaredConstructor
                        = c1.getDeclaredConstructor(String.class, int.class);
                declaredConstructor.setAccessible(true);  //允许调用私有构造方法
                Student student = (Student)declaredConstructor.newInstance("zhangsan",10);
                System.out.println(student);
            } catch (ClassNotFoundException e) {
                throw new RuntimeException(e);
            } catch (NoSuchMethodException e) {
                throw new RuntimeException(e);
            } catch (InvocationTargetException e) {
                throw new RuntimeException(e);
            } catch (InstantiationException e) {
                throw new RuntimeException(e);
            } catch (IllegalAccessException e) {
                throw new RuntimeException(e);
            }
        }
    public static void main2(String[] args) {
        try {
            Class<?> c1 = Class.forName("dome1.Student");
            Student student =(Student)c1.newInstance();
            System.out.println(student);
        } catch (InstantiationException e) {
            throw new RuntimeException(e);
        } catch (IllegalAccessException e) {
            throw new RuntimeException(e);
        } catch (ClassNotFoundException e) {
            throw new RuntimeException(e);
        }
    }
    public static void main1(String[] args) throws ClassNotFoundException {
        Class<?> c1 = Class.forName("dome1.Student");

        Class<?> c2 = Student.class;

        Student student = new Student();
        Class<?> c3 = student.getClass();

        System.out.println(c1.equals(c2));
        System.out.println(c1.equals(c3));
        System.out.println(c3.equals(c2));
    }
}
